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            "title": "Groups of Strings",
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            "content": "<p>You are given a <strong>0-indexed</strong> array of strings <code>words</code>. Each string consists of <strong>lowercase English letters</strong> only. No letter occurs more than once in any string of <code>words</code>.</p>\n\n<p>Two strings <code>s1</code> and <code>s2</code> are said to be <strong>connected</strong> if the set of letters of <code>s2</code> can be obtained from the set of letters of <code>s1</code> by any <strong>one</strong> of the following operations:</p>\n\n<ul>\n\t<li>Adding exactly one letter to the set of the letters of <code>s1</code>.</li>\n\t<li>Deleting exactly one letter from the set of the letters of <code>s1</code>.</li>\n\t<li>Replacing exactly one letter from the set of the letters of <code>s1</code> with any letter, <strong>including</strong> itself.</li>\n</ul>\n\n<p>The array <code>words</code> can be divided into one or more non-intersecting <strong>groups</strong>. A string belongs to a group if any <strong>one</strong> of the following is true:</p>\n\n<ul>\n\t<li>It is connected to <strong>at least one</strong> other string of the group.</li>\n\t<li>It is the <strong>only</strong> string present in the group.</li>\n</ul>\n\n<p>Note that the strings in <code>words</code> should be grouped in such a manner that a string belonging to a group cannot be connected to a string present in any other group. It can be proved that such an arrangement is always unique.</p>\n\n<p>Return <em>an array</em> <code>ans</code> <em>of size</em> <code>2</code> <em>where:</em></p>\n\n<ul>\n\t<li><code>ans[0]</code> <em>is the <strong>maximum number</strong> of groups</em> <code>words</code> <em>can be divided into, and</em></li>\n\t<li><code>ans[1]</code> <em>is the <strong>size of the largest</strong> group</em>.</li>\n</ul>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> words = [&quot;a&quot;,&quot;b&quot;,&quot;ab&quot;,&quot;cde&quot;]\n<strong>Output:</strong> [2,3]\n<strong>Explanation:</strong>\n- words[0] can be used to obtain words[1] (by replacing &#39;a&#39; with &#39;b&#39;), and words[2] (by adding &#39;b&#39;). So words[0] is connected to words[1] and words[2].\n- words[1] can be used to obtain words[0] (by replacing &#39;b&#39; with &#39;a&#39;), and words[2] (by adding &#39;a&#39;). So words[1] is connected to words[0] and words[2].\n- words[2] can be used to obtain words[0] (by deleting &#39;b&#39;), and words[1] (by deleting &#39;a&#39;). So words[2] is connected to words[0] and words[1].\n- words[3] is not connected to any string in words.\nThus, words can be divided into 2 groups [&quot;a&quot;,&quot;b&quot;,&quot;ab&quot;] and [&quot;cde&quot;]. The size of the largest group is 3.  \n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> words = [&quot;a&quot;,&quot;ab&quot;,&quot;abc&quot;]\n<strong>Output:</strong> [1,3]\n<strong>Explanation:</strong>\n- words[0] is connected to words[1].\n- words[1] is connected to words[0] and words[2].\n- words[2] is connected to words[1].\nSince all strings are connected to each other, they should be grouped together.\nThus, the size of the largest group is 3.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= words.length &lt;= 2 * 10<sup>4</sup></code></li>\n\t<li><code>1 &lt;= words[i].length &lt;= 26</code></li>\n\t<li><code>words[i]</code> consists of lowercase English letters only.</li>\n\t<li>No letter occurs more than once in <code>words[i]</code>.</li>\n</ul>\n",
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            "exampleTestcases": "[\"a\",\"b\",\"ab\",\"cde\"]\n[\"a\",\"ab\",\"abc\"]",
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                    "name": "Bit Manipulation",
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                    "code": "class Solution {\npublic:\n    vector<int> groupStrings(vector<string>& words) {\n        \n    }\n};",
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                    "code": "class Solution(object):\n    def groupStrings(self, words):\n        \"\"\"\n        :type words: List[str]\n        :rtype: List[int]\n        \"\"\"\n        ",
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                    "code": "\n\n/**\n * Note: The returned array must be malloced, assume caller calls free().\n */\nint* groupStrings(char ** words, int wordsSize, int* returnSize){\n\n}",
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                    "code": "public class Solution {\n    public int[] GroupStrings(string[] words) {\n        \n    }\n}",
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                    "code": "/**\n * @param {string[]} words\n * @return {number[]}\n */\nvar groupStrings = function(words) {\n    \n};",
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                    "code": "# @param {String[]} words\n# @return {Integer[]}\ndef group_strings(words)\n    \nend",
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                    "code": "class Solution {\n    func groupStrings(_ words: [String]) -> [Int] {\n        \n    }\n}",
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                    "code": "object Solution {\n    def groupStrings(words: Array[String]): Array[Int] = {\n        \n    }\n}",
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                    "code": "class Solution {\n    fun groupStrings(words: Array<String>): IntArray {\n        \n    }\n}",
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                    "code": "impl Solution {\n    pub fn group_strings(words: Vec<String>) -> Vec<i32> {\n        \n    }\n}",
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                    "code": "class Solution {\n\n    /**\n     * @param String[] $words\n     * @return Integer[]\n     */\n    function groupStrings($words) {\n        \n    }\n}",
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                    "code": "(define/contract (group-strings words)\n  (-> (listof string?) (listof exact-integer?))\n\n  )",
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                    "lang": "Erlang",
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                    "code": "-spec group_strings(Words :: [unicode:unicode_binary()]) -> [integer()].\ngroup_strings(Words) ->\n  .",
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                    "code": "defmodule Solution do\n  @spec group_strings(words :: [String.t]) :: [integer]\n  def group_strings(words) do\n\n  end\nend",
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                "Can we build a graph from words, where there exists an edge between nodes i and j if words[i] and words[j] are connected?",
                "The problem now boils down to finding the total number of components and the size of the largest component in the graph.",
                "How can we use bit masking to reduce the search space while adding edges to node i?"
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